Automatic braze



2 Sheets- 81mm 1.

(No Model.)

H. H. HOBERT.

AUTOMATIC BRAKE. I No. 359,675. Patented Mar. 22, 1887.

WW 351 ("l/mum s.

(No Model.) 2 Sheets-S11eet 2. H. H. HOBERT.

AUTOMATIC BRAKE. No. 359,675. Patented MaLZZ, 1887.

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HEUSTON H. HOBERT, OF BALTIMORE, MARYLAND, ASSIGNOR OF ONE-HALF TO GEORGE G. BODEN, OF SAME PLACE.

AUTOMATIC BRAKE.

SPECIFICATION forming part of Letters Patent No. 359,675, dated March 22, 1887.

Application filed December 29, 1886. Serial No. $12.87.).

Z2) whom it may concern:

Be it known that I, Hnusron H. HOBERT,

a citizens of the United States, residing-at Baltimore, in the State of Maryland, have invented certain new and useful Improvements in Automatic Brakes, of which the following is a clear, full, and exact description, reference being had to theaccompanying drawings, making apart of this specification, in which- Figure l is a plan View of the running-gear of an ordinary wagon with myiniproved brake attached. Fig. 2 is a longitudinal section through the same. Fig. 3 is a perspective View of the lovers with the brake-bar raised.

I 5 My present invention relates to an automatic brake for wagons and other vehicles;-and it consists in the combination and arrangement of the several devices, as hereinafter described and claimed.

To enable others skilled in the art to make and use my invention, I will proceed to describe the exact manner in which I have carried it out.

In the drawings, A A represent the wheels, B the reach, 0 the hounds, and D the tongue,

of a wagon of any ordinary construction.

On the rear end of the tongue is rigidly secured the slot-ted plate E, bent at right angles, so as to receive the double-tree F between the tongue and the bent slotted plate, as shown in Fig. 2, where it is safely held in position by the bolt a moving freely in the slot formed in the plate E. To the rear of the doubletree is secured one end of the rod 1), the opposite end of which is attached to a transverse bar, b, resting loosely across the reach B and connected at each end to the cam-lewrs G, the said levers being pivoted to each side of the reach, to allow them to rise or fall, as will be hereinafter explained.

On the rear of the axle or the bolster, and to the rear of the center of the wheels, I pivot the swinging arms II II, to the forward ends of which is secured the bral e-rod I, carrying 5 the rubber-blocks J. It is evident that by pivoting the arms II II at a point in rear of the center of the wheels the brakebar when raised will raise the rubber-blocks clear of the wheels, and when allowed to drop on the wheels will automatically lock the same without the intervention of springs or other mechanism, the locking being the result entirely of (No model.)

the friction between the rubber-blocks and periphery of the wheel, without detracting 1n the slightest degree from the supplied power necessary to operate the machine.

I am aware that self-acting brakes are not broadly new, nor do I claim such, broadly, as my invention; but in my improvement I avoid springs which have not power enough 63 to cause the necessary friction, and if they had enough it is evident that, as they act but in one direction, the same power must be overcome by the stress of the team to keep it inactive when not required, and the time when 65 the brake is not required being so much greater than the time when it is required that mechanically the weight of ihe spring upon the team becomes a serious disadvantage.

In my improvement the only force expended by the team is the force necessary to raise the weight of the brake.

It is evident from the above description of my construction that the normal condition of my brake is upon the wheels; butthe moment that any strain is brought upon the doubletree it moves up in the slot sufficient to draw the rod 1) and raise the brake from the wheels, where it is held by the draft until the traces slacken from any cause, when the brake again drops instantly upon the wheels, ready to be applied, if necessary.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. In an automatic brake, the swinging arms H H, pivoted at a point in the rear of the cen ter of the wheels, and the brake-bar I, in combination with the independent pivoted canilevers G and rod 1), all constructed and arranged to operate substantially as and for the purpose set forth.

2. In an automatic brake, the swinging arms H H, pivoted at a point in the rear of the center of the wheel,- brakebar I, rubber-blocks J, and pivoted CQJID'IGVBFS G, in combination with the red I), slotted bar E, and bolt a, all constructed substantially as and for the purpose set forth.

HEUSTON H. HOBERT.

Vita esses Tnos. KELL BRADFORD, S. W. BRADFORD. 

